[kaptain]

Very interesting and shows that BB has developed a superior BMS than other brands.

This is an interesting point, but I'd like to see some facts to validate this.
I tried Google to find out what makes BBB's BMS unique and how it's different from others, whether its BMS has a built-in balance function, or uses distributed function, etc. In the end, I really haven't really found any specifics to validate that argument- its BMS being different or 'superior'.

However, I do see BBB has a 10-year warranty, while most others vary from 5 years to 11 years.
My understanding is that most, if not all LiFePO4 types of batteries have a built-in BMS, its basic functions include protecting each individual cell from over/under voltage, over/under temperature, short circuits, and high currents.

On its website does say the serial connection is limited to up to 4. And unlimited in parallel.

   

And I see someone posted some good questions on BBs website in March 2022, and that question didn't receive an answer.


   

btw, I found some coupons, if someone decided to buy BB batteries and looking for a discount.

   

And a couple of articles to share on serial and parallel connections, I believe Dakota Lithium is the one that offers 11 years warranty.

1) How to wire in parallel or in series.

2) Explaining the limits of LiFePO4 batteries in parallel.